The research questions will be; can a TBR Neurofeedback training in healthy (non-ADHD) people with elevated TBR reduce TBR and (very much secondary) will the training perhaps increase cognitive performance on a response conflict task? If so we might continue with further studies to assess NFT effects on cognitive performance in CPA in healthy people. It is expected that TBR will reduce after training onset. Also, it is expected that performance on the interference task will improve after participants have started with the TBR Neurofeedback training.